6 gallon better bottles

[Chemstudent]

If I'm planning on making both 3 gallon and 5 gallon batches, would a six gallon better bottle do the trick? I'm worried that with 3 gallons in a 6 gallon bottle, there would be too much headspace. Is this an issue?

 

[squonk32]

its not an issue. That's why you use an airlock.

 

[frazier]

Like Squonk said. All that headspace gets filled with CO2, no worries.

 

[BakRivrBruen]

What they said ^

Lagering is a different story in that you want minimal head space. Although, I haven't really noticed a huge difference when lagering with a gallon or so less beer than the vessel size. But then again I am no BJCP judge either.